Notice that around {{MATH_85}}, only the {{MATH_86}} factor changes signs. That means {{MATH_87}} will change signs, so the graph will pass through the {{MATH_88}}-axis at {{MATH_89}}. At {{MATH_90}}, however, the {{MATH_91}} factor does NOT change signs (due to the even exponent). That means {{MATH_92}} will turn around at that {{MATH_93}}-intercept. We also notice that for {{MATH_94}} in the interval {{MATH_95}} the function {{MATH_96}} is negative and for {{MATH_97}} in {{MATH_98}} the function {{MATH_99}} is positive. (Since {{MATH_100}} is an odd-degree polynomial, its `ends' go in opposite directions.) Putting this together, we have the following graph. {{CMD_101}} {{ENV_102}} {{CMD_103}} {{CMD_104}} {{CMD_105}}